<!DOCTYPE html>
<html lang="zh-CN">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>exPansion AI</title>
    <style>
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: "PingFang SC", "Microsoft YaHei", sans-serif;
        }
        
        body {
            background-color: #f7f9fc;
            background-image: 
                radial-gradient(circle at 10% 20%, rgba(77, 139, 249, 0.05) 0%, transparent 20%),
                radial-gradient(circle at 90% 80%, rgba(77, 139, 249, 0.05) 0%, transparent 20%),
                linear-gradient(135deg, rgba(77, 139, 249, 0.02) 0%, rgba(120, 204, 255, 0.02) 100%);
            position: relative;
            overflow-x: hidden;
        }
        
        body::before {
            content: "";
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: 
                radial-gradient(circle at 20% 20%, rgba(77, 139, 249, 0.03) 0%, transparent 25%),
                radial-gradient(circle at 80% 80%, rgba(120, 204, 255, 0.03) 0%, transparent 25%),
                url("data:image/svg+xml,%3Csvg width='100' height='100' viewBox='0 0 100 100' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M11 18c3.866 0 7-3.134 7-7s-3.134-7-7-7-7 3.134-7 7 3.134 7 7 7zm48 25c3.866 0 7-3.134 7-7s-3.134-7-7-7-7 3.134-7 7 3.134 7 7 7zm-43-7c1.657 0 3-1.343 3-3s-1.343-3-3-3-3 1.343-3 3 1.343 3 3 3zm63 31c1.657 0 3-1.343 3-3s-1.343-3-3-3-3 1.343-3 3 1.343 3 3 3zM34 90c1.657 0 3-1.343 3-3s-1.343-3-3-3-3 1.343-3 3 1.343 3 3 3zm56-76c1.657 0 3-1.343 3-3s-1.343-3-3-3-3 1.343-3 3 1.343 3 3 3zM12 86c2.21 0 4-1.79 4-4s-1.79-4-4-4-4 1.79-4 4 1.79 4 4 4zm28-65c2.21 0 4-1.79 4-4s-1.79-4-4-4-4 1.79-4 4 1.79 4 4 4zm23-11c2.76 0 5-2.24 5-5s-2.24-5-5-5-5 2.24-5 5 2.24 5 5 5zm-6 60c2.21 0 4-1.79 4-4s-1.79-4-4-4-4 1.79-4 4 1.79 4 4 4zm29 22c2.76 0 5-2.24 5-5s-2.24-5-5-5-5 2.24-5 5 2.24 5 5 5zm32 63c2.76 0 5-2.24 5-5s-2.24-5-5-5-5 2.24-5 5 2.24 5 5 5zm-9-21c1.105 0 2-.895 2-2s-.895-2-2-2-2 .895-2 2 .895 2 2 2zM60 91c1.105 0 2-.895 2-2s-.895-2-2-2-2 .895-2 2 .895 2 2 2zM35 41c1.105 0 2-.895 2-2s-.895-2-2-2-2 .895-2 2 .895 2 2 2zM12 60c1.105 0 2-.895 2-2s-.895-2-2-2-2 .895-2 2 .895 2 2 2z' fill='%234d8bf9' fill-opacity='0.02' fill-rule='evenodd'/%3E%3C/svg%3E");
            pointer-events: none;
            z-index: -1;
            animation: backgroundAnimation 30s linear infinite;
        }
        
        @keyframes backgroundAnimation {
            0% {
                background-position: 0 0;
            }
            100% {
                background-position: 100px 100px;
            }
        }
        
        .header {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 15px 40px;
            background-color: white;
            box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
            position: sticky;
            top: 0;
            z-index: 100;
        }
        
        .logo {
            display: flex;
            align-items: center;
        }
        
        .logo img {
            width: 32px;
            height: 32px;
        }
        
        .logo-text {
            font-size: 22px;
            font-weight: bold;
            margin-left: 8px;
            color: #4d8bf9;
        }
        
        .Blt-badge {
            background-color: #4d8bf9;
            color: white;
            font-size: 12px;
            padding: 2px 6px;
            border-radius: 10px;
            margin-left: 5px;
        }
        
        .nav {
            display: flex;
            gap: 24px;
        }
        
        .nav-item {
            font-size: 14px;
            color: #333;
            cursor: pointer;
            position: relative;
            text-decoration: none;
            padding: 5px 10px;
            transition: all 0.3s ease;
        }
        
        .nav-item::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 50%;
            width: 0;
            height: 2px;
            background: linear-gradient(90deg, #4d8bf9, #78ccff);
            transition: all 0.3s ease;
            transform: translateX(-50%);
        }
        
        .nav-item:hover::after {
            width: 100%;
        }
        
        .nav-item:hover {
            color: #4d8bf9;
            transform: translateY(-2px);
        }
        
        .nav-item.active {
            font-weight: bold;
            color: #4d8bf9;
        }
        
        .right-menu {
            display: flex;
            align-items: center;
            gap: 15px;
        }
        
        .right-menu-item {
            font-size: 14px;
            color: #666;
            cursor: pointer;
            position: relative;
            display: flex;
            align-items: center;
            padding: 5px 8px;
            border-radius: 4px;
            transition: all 0.3s ease;
        }
        
        /* 添加悬停效果 */
        .right-menu-item:hover {
            background-color: rgba(0, 0, 0, 0.04);
        }
        
        /* 语言选择器样式 */
        .language-selector {
            position: relative;
            cursor: pointer;
        }
        
        .language-selector .right-menu-item {
            padding-right: 20px;
        }
        
        /* 添加下拉箭头 */
        .language-selector .right-menu-item::after {
            content: '';
            position: absolute;
            right: 5px;
            top: 50%;
            transform: translateY(-50%);
            width: 0;
            height: 0;
            border-left: 4px solid transparent;
            border-right: 4px solid transparent;
            border-top: 4px solid #666;
        }
        
        /* 下拉菜单样式 */
        .language-dropdown {
            position: absolute;
            top: 100%;
            right: 0;
            background: white;
            border-radius: 4px;
            box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
            min-width: 120px;
            display: none;
            z-index: 1000;
        }
        
        .language-selector:hover .language-dropdown {
            display: block;
        }
        
        .language-option {
            padding: 8px 16px;
            display: flex;
            align-items: center;
            color: #333;
            transition: all 0.2s ease;
        }
        
        .language-option:hover {
            background-color: #f5f5f5;
        }
        
        .language-option.active {
            color: #4d8bf9;
        }
        
        /* 添加选中标记 */
        .language-option.active::before {
            content: '✓';
            margin-right: 8px;
            color: #4d8bf9;
        }
        
        /* 切换节点样式 */
        .node-switcher {
            position: relative;
            cursor: pointer;
        }
        
        .node-switcher .right-menu-item {
            padding-right: 20px;
        }
        
        /* 添加下拉箭头 */
        .node-switcher .right-menu-item::after {
            content: '';
            position: absolute;
            right: 5px;
            top: 50%;
            transform: translateY(-50%);
            width: 0;
            height: 0;
            border-left: 4px solid transparent;
            border-right: 4px solid transparent;
            border-top: 4px solid #666;
        }
        
        /* 节点下拉菜单样式 */
        .node-dropdown {
            position: absolute;
            top: 100%;
            right: 0;
            background: white;
            border-radius: 4px;
            box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
            min-width: 200px;
            display: none;
            z-index: 1000;
            padding: 8px 0;
        }
        
        .node-switcher:hover .node-dropdown {
            display: block;
        }
        
        .node-option {
            padding: 8px 16px;
            display: flex;
            align-items: center;
            color: #333;
            transition: all 0.2s ease;
            text-decoration: none;
        }
        
        .node-option:hover {
            background-color: #f5f5f5;
        }
        
        .node-option .node-status {
            margin-right: 8px;
        }
        
        .node-option .node-speed {
            margin-left: auto;
            font-size: 12px;
            color: #52c41a;
        }
        
        /* 修改图标样式 */
        .icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 16px;
            height: 16px;
            margin-right: 6px;
        }
        
        .icon svg {
            width: 14px;
            height: 14px;
        }
        
        /* 修改卡片容器样式 */
        .hero {
            display: flex;
            padding: 40px;
            min-height: 400px;
            position: relative;
            overflow: visible;
            align-items: center;
            background: transparent;
            border-radius: 20px;
            margin: 20px 40px;
            gap: 50px;
            max-width: 1200px;
            margin-left: auto;
            margin-right: auto;
        }
        
        .hero::before {
            content: '';
            position: absolute;
            width: 100%;
            height: 100%;
            top: 0;
            left: 0;
            background: 
                radial-gradient(circle at 20% 30%, rgba(77, 139, 249, 0.03) 0%, transparent 40%),
                radial-gradient(circle at 80% 70%, rgba(120, 204, 255, 0.03) 0%, transparent 40%);
            z-index: 0;
            animation: heroBackground 15s infinite alternate ease-in-out;
        }
        
        @keyframes heroBackground {
            0% {
                background-position: 0% 0%;
            }
            100% {
                background-position: 100% 100%;
            }
        }
        
        .hero-content {
            flex: 1;
            padding-right: 40px;
            position: relative;
            z-index: 1;
            display: flex;
            flex-direction: column;
            justify-content: center;
        }
        
        .hero-title {
            font-size: 42px;
            color: #4d8bf9;
            margin-bottom: 30px;
            font-weight: bold;
            position: relative;
            display: inline-block;
        }
        
        .hero-title::after {
            content: '';
            position: absolute;
            width: 60px;
            height: 3px;
            background: linear-gradient(90deg, #4d8bf9, #78ccff);
            bottom: -10px;
            left: 0;
        }
        
        .hero-description {
            font-size: 16px;
            color: #555;
            margin-bottom: 30px;
            line-height: 1.8;
            max-width: 600px;
            position: relative;
            background: transparent;
            padding: 0;
            border-radius: 0;
            backdrop-filter: none;
            box-shadow: none;
            margin-right: 0;
            border-left: none;
            z-index: 2;
            transition: transform 0.3s ease;
        }
        
        .hero-description:hover {
            transform: translateX(10px);
        }
        
        .typing-text {
            font-size: 16px;
            font-weight: bold;
            margin: 40px 0;
            min-height: 24px;
            position: relative;
            border-bottom: 1px solid #eee;
            padding-bottom: 20px;
            color: #4d8bf9;
            background: linear-gradient(90deg, #4d8bf9, #78ccff);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            position: relative;
        }
        
        .typing-text::before {
            content: '';
            position: absolute;
            left: 0;
            bottom: -1px;
            width: 100px;
            height: 2px;
            background: linear-gradient(90deg, #4d8bf9, transparent);
        }
        
        .buttons {
            display: flex;
            gap: 15px;
            margin-top: 30px;
        }
        
        .button {
            padding: 10px 20px;
            border-radius: 5px;
            font-size: 14px;
            cursor: pointer;
        }
        
        .primary-button {
            background-color: #4d8bf9;
            color: white;
            border: none;
        }
        
        .secondary-button {
            background-color: white;
            color: #333;
            border: 1px solid #ddd;
        }
        
        .hero-image {
            flex: 1;
            display: flex;
            justify-content: flex-start;
            align-items: center;
            position: relative;
            z-index: 2;
            perspective: 1500px;
            transform-style: preserve-3d;
            padding-right: 20px;
        }
        
        /* 修改卡片样式 */
        .features-card {
            background-color: white;
            border-radius: 15px;
            box-shadow: 0 25px 35px rgba(0, 0, 0, 0.08);
            padding: 25px 30px;
            width: 100%;
            max-width: 580px; /* 增加卡片宽度 */
            transition: transform 0.3s ease-out, box-shadow 0.3s ease-out;
            transform: perspective(1500px) rotateX(1deg) rotateY(-8deg) rotateZ(0deg); /* 减小初始倾斜角度 */
            transform-style: preserve-3d;
            transform-origin: center center;
            position: relative;
            overflow: hidden;
            z-index: 1;
            will-change: transform;
        }
        
        /* 调整卡片内容布局，减少内容高度 */
        .feature-item {
            display: flex;
            margin-bottom: 15px; /* 减少项目间距 */
            transition: all 0.2s ease-out;
            position: relative;
            padding: 4px 0; /* 减少内边距 */
            transform: translateZ(0);
        }
        
 
        
        /* 优化悬停效果 */
        .features-card:hover {
            transform: perspective(1500px) rotateX(0) rotateY(-2deg) rotateZ(0deg); /* 保留轻微倾斜感 */
            box-shadow: 0 30px 50px rgba(77, 139, 249, 0.12);
            transition: transform 0.4s cubic-bezier(0.34, 1.56, 0.64, 1), box-shadow 0.3s ease-out;
        }
        
        /* 添加鼠标跟随效果，但更加柔和 */
        .features-card {
            cursor: default;
        }
        
        .feature-icon {
            width: 32px;
            height: 32px;
            border-radius: 50%;
            display: flex;
            justify-content: center;
            align-items: center;
            margin-right: 15px;
            flex-shrink: 0;
            font-size: 16px;
            background: rgba(77, 139, 249, 0.1);
            color: #4d8bf9;
        }
        
        .feature-content {
            flex: 1;
            padding-top: 3px;
        }
        
        .feature-title {
            font-size: 16px;
            font-weight: 600;
            margin-bottom: 6px;
            color: #333;
        }
        
        .feature-description {
            font-size: 14px;
            color: #666;
            line-height: 1.6;
        }
        
        .features-card:hover .feature-item:hover {
            transform: translateX(5px);
            transition: transform 0.2s cubic-bezier(0.34, 1.56, 0.64, 1);
        }
        
        .features-card:hover .feature-item:hover .feature-title {
            transform: scale(1.05);
            color: #4d8bf9;
        }
        
        .features-card:hover .feature-item:hover .feature-description {
            transform: scale(1.02);
            color: #666;
        }
        
        .features-card:hover .card-title {
            transform: scale(1.05);
            color: #4d8bf9;
        }
        
        .feature-icon.yellow {
            background-color: #fef6e5;
            color: #fbb73c;
        }
        
        .feature-icon.blue {
            background-color: #e9f6fe;
            color: #4d8bf9;
        }
        
        .feature-icon.pink {
            background-color: #feeaef;
            color: #f75d81;
        }
        
        .feature-icon.green {
            background-color: #e5f7f0;
            color: #20b787;
        }
        
        .feature-icon.purple {
            background-color: #f0eafd;
            color: #8067dc;
        }
        
        .feature-icon.red {
            background-color: #e74c3c;
            color: #e74c3c;
        }
        
        .feature-content {
            flex: 1;
        }
        
        .models-section {
            padding: 20px 40px 60px;
        }
        
        .section-title {
            font-size: 20px;
            margin-bottom: 30px;
            text-align: center;
        }
        
        .models-container {
            display: flex;
            flex-direction: column;
            gap: 20px;
        }
        
        .models-row {
            display: flex;
            justify-content: center;
            gap: 20px;
            flex-wrap: wrap;
        }
        
        .model-item {
            width: 60px;
            height: 60px;
            display: flex;
            justify-content: center;
            align-items: center;
            background-color: white;
            border-radius: 12px;
            box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
            cursor: pointer;
            transition: transform 0.3s;
            position: relative;
            overflow: hidden;
        }
        
        .model-item img {
            width: 70%;
            height: 70%;
            object-fit: contain;
            transition: transform 0.3s;
        }
        
        .model-item:hover {
            transform: translateY(-5px);
        }
        
        .model-item:hover img {
            transform: scale(1.1);
        }
        
        .model-item:hover::before {
            content: "";
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background-image: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" width="100" height="100" viewBox="0 0 100 100"><rect width="20" height="20" x="0" y="0" fill="%234d8bf9" opacity="0.1"/><rect width="20" height="20" x="20" y="0" fill="%234d8bf9" opacity="0.05"/><rect width="20" height="20" x="40" y="0" fill="%234d8bf9" opacity="0.1"/><rect width="20" height="20" x="60" y="0" fill="%234d8bf9" opacity="0.05"/><rect width="20" height="20" x="80" y="0" fill="%234d8bf9" opacity="0.1"/><rect width="20" height="20" x="0" y="20" fill="%234d8bf9" opacity="0.05"/><rect width="20" height="20" x="20" y="20" fill="%234d8bf9" opacity="0.1"/><rect width="20" height="20" x="40" y="20" fill="%234d8bf9" opacity="0.05"/><rect width="20" height="20" x="60" y="20" fill="%234d8bf9" opacity="0.1"/><rect width="20" height="20" x="80" y="20" fill="%234d8bf9" opacity="0.05"/><rect width="20" height="20" x="0" y="40" fill="%234d8bf9" opacity="0.1"/><rect width="20" height="20" x="20" y="40" fill="%234d8bf9" opacity="0.05"/><rect width="20" height="20" x="40" y="40" fill="%234d8bf9" opacity="0.1"/><rect width="20" height="20" x="60" y="40" fill="%234d8bf9" opacity="0.05"/><rect width="20" height="20" x="80" y="40" fill="%234d8bf9" opacity="0.1"/><rect width="20" height="20" x="0" y="60" fill="%234d8bf9" opacity="0.05"/><rect width="20" height="20" x="20" y="60" fill="%234d8bf9" opacity="0.1"/><rect width="20" height="20" x="40" y="60" fill="%234d8bf9" opacity="0.05"/><rect width="20" height="20" x="60" y="60" fill="%234d8bf9" opacity="0.1"/><rect width="20" height="20" x="80" y="60" fill="%234d8bf9" opacity="0.05"/><rect width="20" height="20" x="0" y="80" fill="%234d8bf9" opacity="0.1"/><rect width="20" height="20" x="20" y="80" fill="%234d8bf9" opacity="0.05"/><rect width="20" height="20" x="40" y="80" fill="%234d8bf9" opacity="0.1"/><rect width="20" height="20" x="60" y="80" fill="%234d8bf9" opacity="0.05"/><rect width="20" height="20" x="80" y="80" fill="%234d8bf9" opacity="0.1"/></svg>');
            opacity: 0.8;
            z-index: 0;
        }

        .advantages {
            padding: 60px 40px;
            text-align: center;
        }
        
        .advantages-title {
            font-size: 30px;
            font-weight: bold;
            margin-bottom: 50px;
        }
        
        .advantage-timeline {
            max-width: 800px;
            margin: 0 auto;
            position: relative;
            padding-left: 30px;
        }
        
        .advantage-timeline::before {
            content: "";
            position: absolute;
            left: 15px;
            top: 0;
            bottom: 0;
            width: 2px;
            background: #eaeaea;
        }
        
        .advantage-item {
            display: flex;
            align-items: flex-start;
            margin-bottom: 30px;
            text-align: left;
            position: relative;
        }
        
        .advantage-icon {
            width: 30px;
            height: 30px;
            border-radius: 50%;
            display: flex;
            justify-content: center;
            align-items: center;
            margin-right: 15px;
            flex-shrink: 0;
            background: #fff;
            border: 2px solid;
            margin-left: -15px;
            z-index: 2;
            position: relative;
        }
        
        .advantage-icon.blue {
            color: #4d8bf9;
            border-color: #4d8bf9;
        }
        
        .advantage-icon.green {
            color: #20b787;
            border-color: #20b787;
        }
        
        .advantage-icon.yellow {
            color: #fbb73c;
            border-color: #fbb73c;
        }
        
        .advantage-icon.orange {
            color: #ff7846;
            border-color: #ff7846;
        }
        
        .advantage-icon.purple {
            color: #8067dc;
            border-color: #8067dc;
        }
        
        .advantage-icon.pink {
            color: #f75d81;
            border-color: #f75d81;
        }
        
        .advantage-icon.red {
            color: #e74c3c;
            border-color: #e74c3c;
        }
        
        .advantage-content {
            flex: 1;
        }
        
        .advantage-title {
            font-size: 16px;
            font-weight: bold;
            margin-bottom: 5px;
            color: #333;
        }
        
        .advantage-description {
            font-size: 14px;
            color: #666;
            line-height: 1.6;
        }

        /* Footer Styles */
        .footer {
            background-color: #f7f9fc;
            padding: 60px 40px 30px;
            margin-top: 60px;
            position: relative;
            overflow: hidden;
        }
        
        .footer::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: 
                radial-gradient(circle at 20% 30%, rgba(77, 139, 249, 0.03) 0%, transparent 40%),
                radial-gradient(circle at 80% 70%, rgba(120, 204, 255, 0.03) 0%, transparent 40%);
            z-index: 0;
        }
        
        .footer-content {
            position: relative;
            z-index: 1;
            max-width: 1200px;
            margin: 0 auto;
        }
        
        .footer-top {
            text-align: center;
            margin-bottom: 50px;
        }
        
        .footer-title {
            font-size: 28px;
            font-weight: bold;
            color: #333;
            margin-bottom: 10px;
        }
        
        .footer-subtitle {
            font-size: 18px;
            color: #666;
            margin-bottom: 20px;
        }
        
        .contact-button {
            background-color: #4d8bf9;
            color: white;
            border: none;
            padding: 10px 25px;
            border-radius: 5px;
            font-size: 14px;
            cursor: pointer;
            transition: background-color 0.3s;
        }
        
        .contact-button:hover {
            background-color: #3a78e7;
        }
        
        .footer-bottom {
            display: flex;
            flex-direction: column;
            align-items: center;
            padding-top: 30px;
            border-top: 1px solid #eee;
        }
        
        .footer-links {
            display: flex;
            gap: 20px;
            margin-bottom: 20px;
        }
        
        .footer-link {
            color: #666;
            text-decoration: none;
            font-size: 14px;
            transition: color 0.3s;
        }
        
        .footer-link:hover {
            color: #4d8bf9;
        }
        
        .footer-copyright {
            text-align: center;
            color: #888;
            font-size: 14px;
        }
        
        .disclaimer {
            font-size: 12px;
            color: #999;
            margin-top: 10px;
            max-width: 800px;
        }
        
        /* Floating Buttons */
        .floating-buttons {
            position: fixed;
            right: 30px;
            top: 50%;
            transform: translateY(-50%);
            display: flex;
            flex-direction: column;
            gap: 20px;
            z-index: 100;
        }
        
        .floating-button {
            width: 50px;
            height: 50px;
            border-radius: 15px;
            background: rgba(255, 255, 255, 0.9);
            backdrop-filter: blur(10px);
            box-shadow: 0 4px 15px rgba(77, 139, 249, 0.1);
            display: flex;
            justify-content: center;
            align-items: center;
            cursor: pointer;
            transition: all 0.3s ease;
            position: relative;
            overflow: hidden;
        }
        
        .floating-button::before {
            content: '';
            position: absolute;
            width: 100%;
            height: 100%;
            background: linear-gradient(45deg, rgba(77, 139, 249, 0.1), rgba(120, 204, 255, 0.1));
            opacity: 0;
            transition: all 0.3s ease;
        }
        
        .floating-button:hover {
            transform: translateY(-5px) scale(1.05);
            box-shadow: 0 8px 25px rgba(77, 139, 249, 0.2);
        }
        
        .floating-button:hover::before {
            opacity: 1;
        }
        
        .floating-button svg {
            transition: all 0.3s ease;
            position: relative;
            z-index: 1;
        }
        
        .floating-button:hover svg {
            transform: scale(1.1);
            color: #4d8bf9;
        }
        
        /* Popup Styles */
        .popup {
            position: fixed;
            right: 90px;
            top: 50%;
            transform: translateY(-50%);
            background: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(10px);
            border-radius: 15px;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
            z-index: 99;
            display: none;
            transition: all 0.3s ease;
            border: 1px solid rgba(77, 139, 249, 0.1);
        }
        
        .popup::before {
            content: '';
            position: absolute;
            right: -10px;
            top: 50%;
            transform: translateY(-50%);
            border-left: 10px solid rgba(255, 255, 255, 0.95);
            border-top: 10px solid transparent;
            border-bottom: 10px solid transparent;
        }
        
        #api-popup img {
            max-width: 100%;
            display: block;
        }
        
        .notification-popup {
            width: 400px;
            max-height: 80vh;
            overflow-y: auto;
        }
        
        .popup-header {
            background: linear-gradient(90deg, #4d8bf9, #78ccff);
            color: white;
            padding: 15px 20px;
            font-size: 18px;
            text-align: center;
            border-radius: 15px 15px 0 0;
        }
        
        /* 添加滚动条样式 */
        .popup-content::-webkit-scrollbar {
            width: 6px;
        }
        
        .popup-content::-webkit-scrollbar-track {
            background: rgba(0, 0, 0, 0.05);
            border-radius: 3px;
        }
        
        .popup-content::-webkit-scrollbar-thumb {
            background: rgba(77, 139, 249, 0.3);
            border-radius: 3px;
        }
        
        .popup-content::-webkit-scrollbar-thumb:hover {
            background: rgba(77, 139, 249, 0.5);
        }
        
        .notification-item {
            display: flex;
            margin-bottom: 15px;
            padding-bottom: 15px;
            border-bottom: 1px solid #eee;
        }
        
        .notification-dot {
            color: #ff0000;
            margin-right: 10px;
            font-size: 16px;
            line-height: 1.5;
        }
        
        .notification-title {
            font-weight: bold;
            margin-bottom: 5px;
        }
        
        .notification-message {
            font-size: 14px;
            line-height: 1.6;
            color: #555;
        }
        
        .highlight {
            color: #000;
            font-weight: 500;
        }
        
        .date {
            color: #999;
            font-size: 12px;
            display: block;
            margin-top: 5px;
        }
        
        .notification-button-container {
            display: flex;
            justify-content: space-between;
            margin-top: 20px;
        }
        
        .notification-button {
            padding: 8px 20px;
            border-radius: 8px;
            border: none;
            background: linear-gradient(90deg, #4d8bf9, #78ccff);
            color: white;
            cursor: pointer;
            transition: all 0.3s ease;
        }
        
        .notification-button:hover {
            transform: translateY(-2px);
            box-shadow: 0 5px 15px rgba(77, 139, 249, 0.2);
        }
        
        .notification-button.secondary {
            background: #f0f0f0;
            color: #666;
        }
        
        .notification-button.secondary:hover {
            background: #e5e5e5;
        }

        /* 添加动态彩色边框 */
        .features-card .rainbow-border {
            position: absolute;
            top: -2px;
            left: -2px;
            right: -2px;
            bottom: -2px;
            z-index: -2;
            border-radius: 17px;
            background: linear-gradient(45deg, 
                #4d8bf9, #78ccff, #20b787, #fbb73c, #f75d81, #8067dc, #4d8bf9);
            background-size: 400% 400%;
            animation: rainbowBorder 12s ease infinite;
            opacity: 0.7;
            filter: blur(3px);
        }
        
        @keyframes rainbowBorder {
            0% {
                background-position: 0% 50%;
            }
            50% {
                background-position: 100% 50%;
            }
            100% {
                background-position: 0% 50%;
            }
        }

        /* 添加动态粒子效果 */
        .features-card .particles {
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            overflow: hidden;
            z-index: 0;
        }

        .features-card .particle {
            position: absolute;
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background-color: rgba(77, 139, 249, 0.2);
            animation: particleFloat 20s infinite linear;
        }

        .features-card .particle:nth-child(1) {
            top: 10%;
            left: 20%;
            animation-duration: 15s;
            animation-delay: 0s;
        }

        .features-card .particle:nth-child(2) {
            top: 40%;
            left: 80%;
            width: 4px;
            height: 4px;
            animation-duration: 18s;
            animation-delay: 1s;
            background-color: rgba(120, 204, 255, 0.2);
        }

        .features-card .particle:nth-child(3) {
            top: 70%;
            left: 10%;
            width: 5px;
            height: 5px;
            animation-duration: 12s;
            animation-delay: 2s;
            background-color: rgba(32, 183, 135, 0.2);
        }

        .features-card .particle:nth-child(4) {
            top: 30%;
            left: 60%;
            width: 3px;
            height: 3px;
            animation-duration: 20s;
            animation-delay: 3s;
            background-color: rgba(251, 183, 60, 0.2);
        }

        .features-card .particle:nth-child(5) {
            top: 80%;
            left: 50%;
            width: 4px;
            height: 4px;
            animation-duration: 16s;
            animation-delay: 4s;
            background-color: rgba(247, 93, 129, 0.2);
        }

        @keyframes particleFloat {
            0% {
                transform: translateY(0) translateX(0) rotate(0deg);
            }
            25% {
                transform: translateY(-15px) translateX(8px) rotate(90deg);
            }
            50% {
                transform: translateY(0) translateX(15px) rotate(180deg);
            }
            75% {
                transform: translateY(15px) translateX(8px) rotate(270deg);
            }
            100% {
                transform: translateY(0) translateX(0) rotate(360deg);
            }
        }

        /* 修改API图片弹窗样式 */
        #api-popup {
            width: 280px;
            padding: 15px;
            background: rgba(255, 255, 255, 0.98);
        }

        #api-popup img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: 8px;
            box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
        }

        /* 优化弹窗显示效果 */
        .popup {
            opacity: 0;
            visibility: hidden;
            transform: translateY(-50%) translateX(20px);
            transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

        .popup.show {
            opacity: 1;
            visibility: visible;
            transform: translateY(-50%) translateX(0);
        }

        /* 添加弹窗显示动画 */
        @keyframes popupFadeIn {
            from {
                opacity: 0;
                transform: translateY(-50%) translateX(20px);
            }
            to {
                opacity: 1;
                transform: translateY(-50%) translateX(0);
            }
        }

        /* 添加动态背景效果 */
        .dynamic-background {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            z-index: -1;
            overflow: hidden;
        }

        .floating-circle {
            position: absolute;
            border-radius: 50%;
            background: linear-gradient(45deg, rgba(77, 139, 249, 0.05), rgba(120, 204, 255, 0.05));
            animation: floatAnimation 20s infinite linear;
        }

        .floating-circle:nth-child(1) {
            width: 300px;
            height: 300px;
            top: 10%;
            left: 5%;
            animation-duration: 25s;
        }

        .floating-circle:nth-child(2) {
            width: 200px;
            height: 200px;
            top: 60%;
            right: 10%;
            animation-duration: 20s;
            animation-delay: -5s;
        }

        .floating-circle:nth-child(3) {
            width: 150px;
            height: 150px;
            top: 30%;
            right: 20%;
            animation-duration: 15s;
            animation-delay: -10s;
        }

        @keyframes floatAnimation {
            0% {
                transform: translate(0, 0) rotate(0deg);
            }
            25% {
                transform: translate(50px, 25px) rotate(90deg);
            }
            50% {
                transform: translate(25px, 50px) rotate(180deg);
            }
            75% {
                transform: translate(-25px, 25px) rotate(270deg);
            }
            100% {
                transform: translate(0, 0) rotate(360deg);
            }
        }

        /* 添加网格背景 */
        .grid-background {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background-image: 
                linear-gradient(rgba(77, 139, 249, 0.05) 1px, transparent 1px),
                linear-gradient(90deg, rgba(77, 139, 249, 0.05) 1px, transparent 1px);
            background-size: 30px 30px;
            z-index: -2;
            animation: gridMove 15s linear infinite;
        }

        @keyframes gridMove {
            0% {
                transform: translate(0, 0);
            }
            100% {
                transform: translate(30px, 30px);
            }
        }

        /* 添加光点效果 */
        .light-dots {
            position: absolute;
            width: 4px;
            height: 4px;
            background: rgba(77, 139, 249, 0.3);
            border-radius: 50%;
            animation: dotFloat 3s ease-in-out infinite;
        }

        .light-dots:nth-child(1) { top: 20%; left: 10%; animation-delay: 0s; }
        .light-dots:nth-child(2) { top: 40%; right: 15%; animation-delay: 0.5s; }
        .light-dots:nth-child(3) { bottom: 30%; left: 20%; animation-delay: 1s; }
        .light-dots:nth-child(4) { bottom: 20%; right: 25%; animation-delay: 1.5s; }

        @keyframes dotFloat {
            0%, 100% {
                transform: translateY(0) scale(1);
                opacity: 0.3;
            }
            50% {
                transform: translateY(-15px) scale(1.2);
                opacity: 0.6;
            }
        }
    </style>
</head>
<body>
    <!-- 添加动态背景 -->
    <div class="dynamic-background">
        <div class="floating-circle"></div>
        <div class="floating-circle"></div>
        <div class="floating-circle"></div>
        <div class="grid-background"></div>
        <div class="light-dots"></div>
        <div class="light-dots"></div>
        <div class="light-dots"></div>
        <div class="light-dots"></div>
    </div>
    
    
    <main>
        <section class="hero">
            <div class="hero-content">
                <h1 class="hero-title">exPansion AI <span class="Blt-badge">Blt</span></h1>
                <p class="hero-description">致力于为开发者提供快速、便捷的 Web API 接口调用方案，打造稳定易于使用的 API 接口平台，一站式集成几乎所有AI大模型。</p>
                <div class="typing-text" id="typing-text"></div>
                <div class="buttons">
                    <a href="https://api.cnmai.top/token" class="button primary-button">创建工作台</a>
<a href="https://gpt-best.apifox.cn/doc-3530850" class="button secondary-button">API文档</a>
                </div>
            </div>
            <div class="hero-image">
                <div class="features-card">
                    <!-- 添加动态彩色边框 -->
                    <div class="rainbow-border"></div>
                    
                    <!-- 添加动态光斑效果 -->
                    <div class="light-spots">
                        <div class="light-spot"></div>
                        <div class="light-spot"></div>
                        <div class="light-spot"></div>
                    </div>
                    
                    <!-- 添加动态粒子效果 -->
                    <div class="particles">
                        <div class="particle"></div>
                        <div class="particle"></div>
                        <div class="particle"></div>
                        <div class="particle"></div>
                        <div class="particle"></div>
                    </div>
                    
                    <h3 class="card-title">专业运营</h3>
                    <p style="font-size: 14px; color: #555; margin-bottom: 25px; line-height: 1.6; position: relative; z-index: 1;">我们致力于提供可持续高质量的服务，运用先进的技术架构确保API服务的稳定性与高可用性。</p>
                    
                    <div class="feature-item">
                        <div class="feature-icon yellow">$</div>
                        <div class="feature-content">
                            <div class="feature-title">按量付费</div>
                            <div class="feature-description">根据实际消耗计费，余额不过期，灵活充值，灵活高效。</div>
                        </div>
                    </div>
                    
                    <div class="feature-item">
                        <div class="feature-icon blue">C</div>
                        <div class="feature-content">
                            <div class="feature-title">广泛支持</div>
                            <div class="feature-description">覆盖OpenAI官方高达多款开源扩展模型</div>
                        </div>
                    </div>
                    
                    <div class="feature-item">
                        <div class="feature-icon pink">D</div>
                        <div class="feature-content">
                            <div class="feature-title">透明计费</div>
                            <div class="feature-description">提供详细的消费明细，价格透明，无隐性消费。</div>
                        </div>
                    </div>
                    
                    <div class="feature-item">
                        <div class="feature-icon green">C</div>
                        <div class="feature-content">
                            <div class="feature-title">超高开发</div>
                            <div class="feature-description">默认支持大部分用户的开发需求，若有更高需求，请联系客服进行开通。</div>
                        </div>
                    </div>
                    
                    <div class="feature-item">
                        <div class="feature-icon purple">S</div>
                        <div class="feature-content">
                            <div class="feature-title">高稳定性</div>
                            <div class="feature-description">提供公开节点，记录响应耗时情况，稳定性领先市面中同类产品，确保提供可靠服务。</div>
                        </div>
                    </div>
                </div>
            </div>
        </section>
        
        <section class="models-section">
            <h2 class="section-title">我们已经完全支持OpenAI的全部模型、以及国产各种大模型</h2>
            <div class="models-container">
                <div class="models-row">
                    <div class="model-item">
                        <img src="" alt="AI Model 1">
                    </div>
                    <div class="model-item">
                        <img src="" alt="AI Model 2">
                    </div>
                    <div class="model-item">
                        <img src="https://soar.hznhkj.cn/images/mj/Midjourney.png" alt="AI Model 3">
                    </div>
                    <div class="model-item">
                        <img src="https://suno.cn/images/suno_logo.png" alt="AI Model 4">
                    </div>
                    <div class="model-item">
                        <img src="https://img1.baidu.com/it/u=2141278985,2103469357&fm=253&app=120&size=w931&n=0&f=JPEG&fmt=auto?sec=1713546000&t=d51417baf965d134ab1c49398ef1da4e" alt="AI Model 5">
                    </div>
                    <div class="model-item">
                        <img src="https://gimg3.baidu.com/topone/src=https%3A%2F%2Fbkimg.cdn.bcebos.com%2Fsmart%2F8cb1cb1349540923dd549d5e2f0fc609b3de9c82e3c1-bkimg-process%2Cv_1%2Crw_1%2Crh_1%2Cmaxl_800%2Cpad_1%3Fx-bce-process%3Dimage%2Fresize%2Cm_pad%2Cw_348%2Ch_348%2Ccolor_ffffff&refer=http%3A%2F%2Fwww.baidu.com&app=2011&size=w931&n=0&g=0n&er=404&q=75&fmt=auto&maxorilen2heic=2000000?sec=1713546000&t=b3a7b72704ed0ce48587e54a98be01b1" alt="AI Model 6">
                    </div>
                    <div class="model-item">
                        <img src="https://bizaladdin-image.baidu.com/0/pic/-856892274_-597594076_647962062.jpg" alt="AI Model 7">
                    </div>
                    <div class="model-item">
                        <img src="https://api.bltcy.ai/logos/deepseek.png" alt="...">
                    </div>
                </div>
                
                <div class="models-row">
                    <div class="model-item">
                        <img src="https://bizaladdin-image.baidu.com/0/pic/-198623191_-848819177_2123944374.jpg" alt="AI Model 8">
                    </div>
                    <div class="model-item">
                        <img src="https://gimg3.baidu.com/topone/src=https%3A%2F%2Fbkimg.cdn.bcebos.com%2Fsmart%2F574e9258d109b3de9c8287f6fbe77b81800a18d8e6af-bkimg-process%2Cv_1%2Crw_1%2Crh_1%2Cmaxl_800%2Cpad_1%3Fx-bce-process%3Dimage%2Fresize%2Cm_pad%2Cw_348%2Ch_348%2Ccolor_ffffff&refer=http%3A%2F%2Fwww.baidu.com&app=2011&size=f200,200&n=0&g=0n&er=404&q=75&fmt=auto&maxorilen2heic=2000000?sec=1713546000&t=b26178d585ad85be69b792f843ed6557" alt="AI Model 9">
                    </div>
                    <div class="model-item">
                        <img src="https://one-api.bltcy.top/logos/shangtang.png" alt="AI Model 10">
                    </div>
                    <div class="model-item">
                        <img src="https://t9.baidu.com/it/u=4037406233,2778193482&fm=3035&app=3035&size=f242,150&n=0&f=JPEG&fmt=auto?s=93938C6C6E806F725896D209030060DD&sec=1713546000&t=c59fb6e23339d3b63fe1b4c57bcd262b" alt="AI Model 11">
                    </div>
                    <div class="model-item">
                        <img src="https://gimg3.baidu.com/search/src=http%3A%2F%2Fgips2.baidu.com%2Fit%2Fu%3D2466552100%2C3345163661%26fm%3D3030%26app%3D3030%26f%3DJPEG%3Fw%3D200%26h%3D133%26s%3D78A6387217684D095065E0C60300F0B3&refer=http%3A%2F%2Fwww.baidu.com&app=2021&size=f242,150&n=0&g=0n&q=100&fmt=auto?sec=1713546000&t=edfbf4a8561bf28f5b2bb21743f73415" alt="AI Model 12">
                    </div>
                   
                </div>
            </div>
        </section>
        
        <section class="advantages">
            <h2 class="advantages-title">我们的优势</h2>
            <div class="advantage-timeline">
                <div class="advantage-item">
                    <div class="advantage-icon blue">
                        <svg xmlns="http://www.w3.org/2000/svg" width="16" height="16" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round">
                            <circle cx="12" cy="12" r="10"></circle>
                            <path d="M12 8v4l3 3"></path>
                        </svg>
                    </div>
                    <div class="advantage-content">
                        <div class="advantage-title">#1 API</div>
                        <div class="advantage-description">100%使用官方企业高速通道，已稳定运行1年，承诺永久运营！</div>
                        <div class="advantage-description">触及8个地区，超过5万客户</div>
                    </div>
                </div>
                
                <div class="advantage-item">
                    <div class="advantage-icon green">
                        <svg xmlns="http://www.w3.org/2000/svg" width="16" height="16" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round">
                            <path d="M22 11.08V12a10 10 0 1 1-5.93-9.14"></path>
                            <polyline points="22 4 12 14.01 9 11.01"></polyline>
                        </svg>
                    </div>
                    <div class="advantage-content">
                        <div class="advantage-title">兼容性与支持</div>
                        <div class="advantage-description">完全兼容OpenAI接口协议，确保集成无误。</div>
                        <div class="advantage-description">无缝对接OpenAI接口支持的应用</div>
                    </div>
                </div>
                
                <div class="advantage-item">
                    <div class="advantage-icon yellow">
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